Buggy code:
public class SctTreeView implements ShutdownBroadcastListenerI { private static final Logger LOG = LoggerFactory . getLogger ( SctTreeView . class ) ; private static final SctTreeItemDisplayPolicies defaultDisplayPolicies = new DefaultSctTreeItemDisplayPolicies ( ) ; static volatile boolean shutdownRequested = false ; private final CountDownLatch initializationCountDownLatch_ = new CountDownLatch ( 2 ) ; private StackPane sp_ ; private SctTreeItem rootTreeItem ; private TreeView < TaxonomyReferenceWithConcept > treeView_ ; private SctTreeItemDisplayPolicies displayPolicies = SctTreeView . defaultDisplayPolicies ; protected SctTreeView ( ) { } public StackPane getView ( ) { } public void refresh ( ) { } public void init ( ) { } private synchronized void init ( final UUID rootConcept ) { if ( ( initializationCountDownLatch_ . getCount ( ) ) == 0 ) { SctTreeView . LOG . warn ( "Ignoring<seq2seq4repair_space>call<seq2seq4repair_space>to<seq2seq4repair_space>init({})<seq2seq4repair_space>after<seq2seq4repair_space>previous<seq2seq4repair_space>init()<seq2seq4repair_space>already<seq2seq4repair_space>completed" , rootConcept ) ; return ; } else <START_BUG> if ( ( initializationCountDownLatch_ . getCount ( ) ) == 1 ) { <END_BUG> SctTreeView . LOG . warn ( "Ignoring<seq2seq4repair_space>call<seq2seq4repair_space>to<seq2seq4repair_space>init({})<seq2seq4repair_space>while<seq2seq4repair_space>initial<seq2seq4repair_space>init()<seq2seq4repair_space>still<seq2seq4repair_space>running" , rootConcept ) ; return ; } else if ( ( initializationCountDownLatch_ . getCount ( ) ) == 2 ) { initializationCountDownLatch_ . countDown ( ) ; SctTreeView . LOG . debug ( "Performing<seq2seq4repair_space>initial<seq2seq4repair_space>init({})" , rootConcept ) ; } else { throw new RuntimeException ( ( ( "SctTreeView<seq2seq4repair_space>initializationCountDownLatch_<seq2seq4repair_space>has<seq2seq4repair_space>unexpected<seq2seq4repair_space>count<seq2seq4repair_space>" + ( initializationCountDownLatch_ . getCount ( ) ) ) + "<seq2seq4repair_space>which<seq2seq4repair_space>is<seq2seq4repair_space>not<seq2seq4repair_space>0,<seq2seq4repair_space>1<seq2seq4repair_space>or<seq2seq4repair_space>2" ) ) ; } Task < ConceptChronicleDdo > task = new Task < ConceptChronicleDdo > ( ) { @ Override protected ConceptChronicleDdo call ( ) throws Exception { SctTreeView . LOG . debug ( "Loading<seq2seq4repair_space>concept<seq2seq4repair_space>{}<seq2seq4repair_space>as<seq2seq4repair_space>the<seq2seq4repair_space>root<seq2seq4repair_space>of<seq2seq4repair_space>a<seq2seq4repair_space>tree<seq2seq4repair_space>view" , rootConcept ) ; ConceptChronicleDdo rootConceptCC = ExtendedAppContext . getDataStore ( ) . getFxConcept ( rootConcept , WBUtility . getViewCoordinate ( ) , ACTIVE_VERSIONS , REFEX_MEMBERS , ORIGINATING_AND_DESTINATION_TAXONOMY_RELATIONSHIPS ) ; SctTreeView . LOG . debug ( "Finished<seq2seq4repair_space>loading<seq2seq4repair_space>root<seq2seq4repair_space>concept" ) ; return rootConceptCC ; } @ Override protected void succeeded ( ) { SctTreeView . LOG . debug ( "getFxConcept()<seq2seq4repair_space>(called<seq2seq4repair_space>by<seq2seq4repair_space>init())<seq2seq4repair_space>succeeded" ) ; ConceptChronicleDdo result = this . getValue ( ) ; SctTreeView . this . finishTreeSetup ( result ) ; } @ Override protected void failed ( ) { Throwable ex = getException ( ) ; String title = "Unexpected<seq2seq4repair_space>error<seq2seq4repair_space>loading<seq2seq4repair_space>root<seq2seq4repair_space>concept" ; String msg = ex . getClass ( ) . getName ( ) ; SctTreeView . LOG . error ( title , ex ) ; if ( ! ( SctTreeView . shutdownRequested ) ) { AppContext . getCommonDialogs ( ) . showErrorDialog ( title , msg , ex . getMessage ( ) ) ; } } } ; Utility . execute ( task ) ; } private void finishTreeSetup ( ConceptChronicleDdo rootConcept ) { } public void showConcept ( final UUID conceptUUID , final BooleanProperty workingIndicator ) { } private SctTreeItem findChild ( final SctTreeItem item , final UUID targetChildUUID , final boolean isLast ) { } private ConceptChronicleDdo buildFxConcept ( UUID conceptUUID ) throws IOException , ContradictionException { } public void setDisplayPolicies ( SctTreeItemDisplayPolicies policies ) { } public static SctTreeItemDisplayPolicies getDefaultDisplayPolicies ( ) { } @ Override public void shutdown ( ) { } }

Fix:
if ( ( initializationCountDownLatch_ . getCount ( ) ) <= 1 ) {